The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2017
Filed:
Nov. 25, 2014
Denso Corporation, Kariya, Aichi-pref., JP;
Nippon Soken, Inc., Nishio, Aichi-pref., JP;
Advics Co., Ltd., Kariya, Aichi-pref., JP;
Takashi Hashiba, Nishio, JP;
Naoki Hakamada, Anjo, JP;
Kazunori Uchiyama, Okazaki, JP;
Takahiro Naganuma, Kariya, JP;
Tomoaki Kawabata, Takahama, JP;
Kunihito Ando, Okazaki, JP;
NIPPON SOKEN, INC., Nishio, Aichi-pref., JP;
DENSO CORPORATION, Kariya, Aichi-pref., JP;
ADVICS CO., LTD., Kariya, Aichi-pref., JP;
Abstract
A gear pump apparatus is equipped with a pump and a sealing mechanism which is made up of an outer member, an inner member, and a rubber member fit between the outer and inner members. The inner member has a pressure-exerted surface to which pressure, as produced by contact of the rubber member with the inner member arising from application of discharge pressure of the pump, is applied. The pressure-exerted surface has a flange which creates thrust to move the inner member away from the gear pump, thereby bringing the inner member against an inner wall of a pump casing to develop a hermetical seal between a high-pressure region and a low-pressure region within the pump casing. This eliminates the leakage of pressure and ensures torque required for a pumping operation of the pump.